n. 大肆宣传而结果并未举办的事
在线英汉词典

non-event的短语、例句：

non-event n (infml 口) event that is expected to be interesting, etc, but is in fact a disappointment 扫兴的事
The party was a non-event; hardly anyone came! 那聚会真扫兴, 几乎没什麽人来!